Enallax

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Enallax
Scientific classification OOjs UI icon edit-ltr.svg
Clade: Viridiplantae
Division: Chlorophyta
Class: Chlorophyceae
Order: Sphaeropleales
Family: Scenedesmaceae
Genus: Enallax
Pascher
Type species
Enallax coelastroides
(Bohlin) Skuja [1]
Species
  • Enallax coelastroides
  • Enallax costatus

Enallax is a genus of green algae in the family Scenedesmaceae. [2] It is found in freshwater habitats, such as peat bogs or wet rocks. [1]

Enallax consists of colonies, termed coenobia. Each colony comprises two, four, or eight cells arranged in a row or two alternating rows. Cells are ellipsoidal, cylindrical or fusiform, with their longest axes aligned more or less parallel to each other. The cell walls have three to six longitudinal ribs running from pole to pole. Each cell has one parietal chloroplast with a single pyrenoid. [3] Cells are uninucleate. [1] Cells may accumulate droplets of oil giving them a reddish color. Enallax reproduces asexually via the formation of autospores. The autospores form into the shape of a colony while in the mother cell, and are released by a tear in the mother cell wall. [4]

The genus has existed since at least the Cretaceous period, as evidenced by amber deposits from France containing the fossil species Enallax napoleonis . [5]

Related Research Articles

<span class="mw-page-title-main">Scenedesmaceae</span> Family of algae

Scenedesmaceae is a family of green algae in the order Sphaeropleales. Scenedesmus algae are commonly found in freshwater plankton. The former family Coelastraceae is considered a synonym of Scenedesmaceae.

<span class="mw-page-title-main">Hydrodictyaceae</span> Family of algae

Hydrodictyaceae is a family of green algae in the order Sphaeropleales. They are found in freshwater habitats worldwide.

<i>Coelastrum</i> Genus of algae

Coelastrum is a genus of green algae in the Scenedesmaceae family. It is a common component of the phytoplankton in freshwater habitats such as ponds, lakes, waterfalls, and temporary pools of water, particularly eutrophic ones. The genus has a more or less cosmopolitan distribution, although some species appear to have more restricted geographical distributions.

<i>Coelastrella</i> Genus of algae

Coelastrella is a genus of green algae in the family Scenedesmaceae. It is currently classified in the subfamily Coelastroideae.

Coelastropsis is a genus of green algae in the family Scenedesmaceae, containing the single species Coelastropsis costata. It is found in freshwater lakes and bogs, usually associated with mosses and filamentous algae. It has been recorded in Europe, Cuba and possibly New Zealand.

<i>Desmodesmus</i> Genus of algae

Desmodesmus is a genus of green algae in the family Scenedesmaceae. It is the only chlorophyll-containing organism known to have caused human infections in immunocompetent individuals. All known cases involved open injuries occurring in fresh water.

<i>Dimorphococcus</i> Genus of algae

Dimorphococcus is a genus of fresh water green algae in the family Scenedesmaceae. It is found as a component of the phytoplankton of freshwater ponds, lakes, and peat bogs. It is widespread, but usually not very common.

<i>Hariotina</i> Genus of algae

Hariotina is a genus of green algae in the family Scenedesmaceae. They are classified in the subfamily Coelastroideae.

<i>Kirchneriella</i> Genus of algae

Kirchneriella is a genus of green algae in the family Selenastraceae. It is found in freshwater habitats, as phytoplankton or metaphyton.

<i>Lagerheimia</i> Genus of algae

Lagerheimia is a genus of green algae in the family Oocystaceae. It is commonly found in freshwater habitats all over the world, although some species are rare and have only been recorded from Europe or the United States.

<i>Monactinus</i> Genus of algae

Monactinus is a genus of green algae in the family Hydrodictyaceae. It is very common in freshwater regions throughout the world.

Neodesmus is a genus of green algae in the family Scenedesmaceae.

Podohedriella is a genus of green algae in the family Selenastraceae. It is found in freshwater habitats or on damp wood.

<i>Pseudodidymocystis</i> Genus of algae

Pseudodidymocystis is a genus of green algae in the family Scenedesmaceae.

Raphidocelis is a genus of green algae in the family Selenastraceae. They are found in freshwater habitats.

<i>Schroederiella</i> Genus of algae

Schroederiella is a genus of green algae in the family Scenedesmaceae.

<i>Selenastrum</i> Genus of algae

Selenastrum is a genus of green algae in the family Selenastraceae. It is common in freshwater habitats around the world. Most species prefer temperate or warm-temperate waters.

<i>Tetrastrum</i> Genus of algae

Tetrastrum is a genus of green algae (Chlorophyta). It is a common component of the phytoplankton of freshwater habitats, particularly eutrophic and alkaline waters.

<i>Tetrallantos</i> Genus of algae

Tetrallantos is a genus of green algae in the Scenedesmaceae family. It is a component of the phytoplankton or metaphyton of freshwater habitats such as ponds and lakes It has been found worldwide, but appears to be somewhat rare.

Gilbertsmithia is a genus of green algae in the family Scenedesmaceae, containing the single species Gilbertsmithia grandis. It was named after the American botanist Gilbert Morgan Smith. This remarkable alga has only been recorded once from a muddy rainwater pool in Madras, India.

References

  1. 1 2 3 Guiry, M.D.; Guiry, G.M. "Enallax". AlgaeBase . World-wide electronic publication, National University of Ireland, Galway. Retrieved 2023-11-25.
  2. ↑ See the NCBI webpage on Enallax. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information . Retrieved 2007-03-19.
  3. ↑ Bicudo, Carlos E. M.; Menezes, Mariângela (2006). Gêneros de Algas de Águas Continentais do Brasil: chave para identificação e descrições (2 ed.). RiMa Editora. p. 508. ISBN   857656064X.
  4. ↑ Komárek, J.; Fott, B. (1983). Chlorophyceae (Grünalgen), Ordnung Chlorococcales. Das Phytoplankton des Süßwassers (in German). E. Schweizerbart'sche Verlagsbuchhandlung. p. 1044.
  5. ↑ Girard, Vincent (2009). "Evidence of Scenedesmaceae (Chlorophyta) from 100 million-year-old amber". Geodiversitas. 31 (1): 145–151. doi:10.5252/g2009n1a13. S2CID   129466659. Archived from the original on 11 May 2021. Retrieved 27 November 2021.


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